Safety-razor-blade resharpener



May 15, 1923. 1,455,567 D. B. BROWN SAFETY RAZORIBLAIDE RESHARPENERFiled Oct. 5, 1921 *5 INVENTOR, Zam'dB. Town. QM/I/id Q A TTORNEY.

Patented May 15, 1923.-

v reo s'ro'r ss PATIENT 'o ries. v

' DAVID B. snowmen BELLINGHAM, wAsnmeToN. -;f I

I SAFETY-RAZOR-BLADE RESHARPENER.

Application. filed October 5, 1921. Serial No. 505,555. 3 i

To all whom/it may concern I Be 'it known that I. DAvIn'B. BROWN, acitizen ofthe United States, and resident of Bellingham, in the countyof \Vhatcom and State of lVashington, have invented a new and usefulSafety- Razor-Blade Resharpener,

of which the following is a specification.

My invention relates to improvements in safety-razor blade resharpeners,and the ob ect of my improvement is to provide a simple machine whereina plurality of used blades of safety razors may be simultane ouslyplaced and automatically honed and stropped onflatsurfaces. I

I attain this object with the mechanism illustrated in the accompanyingsheet of drawings in which F igure 1 is an end elevation of myresharpening machine, Fig. 2 is a front elevation of Fig. 1, Fig. 3 isaplan view of the blade holder, drawn ona larger scale Fig. 4 is a sideelevation of Fig.3 and F 5 is a fron't elevation of the lower part ofFig.4. i Similar characters refer to similar parts throughout. Certainparts are broken away to show other parts hidden thereby.

More particularly :-The several elements of the frame are marked 6. ,A.shaft 7 is mounted for revolutionin bearings on the top membersoftheframe. On shaft 7 is mounted fixed six stropdisks 9 and four honedisks 12, each having a hub 10. On the facing sides of discs 9 are theleather discs 11 for 'stropping. Two'plates 13. are fulcrumed togetherby bolts and springs 14. Figs. 3 and 4, and forced apart at one'end byspring 15. On the other end of one of plates 13 are two short studs ewhich register with two holes Z9 in the other plate. A. safety razorblade A is placed between these ends of plates 13 with studs 0 in theholes in said blade by first compressingspring 15. When thus installedthe pressure of said spring will firmly clamp said blade. A clamp stem16 has a cross head 17 mounted in two blocks 19 fastened to one ofplates 13. Said stem extends equally on both sides of the clamp oneither side of which it has the cross pins 20, 20. One end of stem 16 ismounted in a longitudinal hole in oscillatable handle 21 having head 22,in which is pin slot 23 and on the lower end of which is spring blade24. Each of nine similar handlesis mounted in one of a row of holes inthe inner end ofone of n ne barsvfastened to bar 26 fixed on the vment.

shaft'37 in beltingrelation to pulley 43 on staple 29 oscillatabletherein;

brackets of bearings 8 to lie in front'of said.

stropping and honing disks, said holes being placed to' loc'ate-eachhandleona medial line between two of said discs.- Shifting bar 27 ismounted for} longitudinal oscillations in slideways inthe front ends ofupper parallel bars 32, '32,; and for transverse, orup and down,movementssaid bars 32, .32 are each 'pivotally connected to one oflower, parallel bars 33, 33 by. oneof vertical, camwheel yokes 34, 34.Said yokes each mounts a wheel 35 on its lower end which bears on one oftwo cams 86 36. Each of said cams is mounted fixed on the outer end ofshaft 37 which is mounted for revolution in bear ings on frame 6. A handstop-lever F2 is pivotally mounted on a front leg of. frame position itdoes not effect said shaft,- move I A pulley 38 is mounted fixed onshaft 44. A. belt 39 is mounted on said pulleys 38 and 43., Tightenerpulley'4O is mounted for revolution in bearings on the free ends oflinks 41, 41, the other ends of which are mounted on rod a fixed toframe 6 parallel with shaft 37. $1 weight42 is fixed to links 41 to.force pulley40 (1OWIlwardr Said shaft 44 is mounted for revolution inhearings on frame 6 parallel withshaft 37 and mounts fixed pulleys 43and 45. Pulley 45 is. in belting relation with one of disk hubs 10 whichismounted fixed on shaft 7. Belt 46 is used to connect said disk hubwith pulley 45. A cam wheel47 having cam groove 48 is mounted fixed onshaft. 37. The lower end ofa shifting lever 49 is ful-.

crumed to a lower member of frame6 and mounts wheel 50 engaged in camslot'48. In the upper end of lever 49 is fixed pin '51 engaged in theslotted lowerends of a vertical yoke bracket 30 pendent from. shiftingbar27. I

An electric motor 52 is mounted fixed is fixed a pulley 53in beltingrelation with a pulley 55 mounted fixed on one endof on a lower framemember and on itsshafty disk shaft 7. A belt 54 connects pulleys 53 and55. In each of nine holes in bar 27 l is a thimble 28, which mounts avertical I lower g In operation: A device for controlling an electriccurrent, not shown, serving motor 52 is used to start and stop the powerfor' while shaft is held fromturning by the engagement of lever b withpin (6 since, although shaft 44 is revolving, belt 39 is permitted toslip on pulley 38 by the yielding of belt-tightener 40. Shifting bar 27receives its up and down motion from cams 36 operating through parallelbars and its longitudinal movements from cam l7 operating through lever49; Hence bar 2'? mayremain at rest while the honing disks arerevolving. cleaning said leather discs 11 and hone disks l2 andthe-spreading of abrasive material thereon while said bar is at rest.Blades A are clamped between plates 13 and-the holders mounted inhandles 21 as shown. Said holders are reversible in said handles. v Asbar 27 moves forth and back longitudinally the outer ends of springblades 24 are carried with it causing handles 21- to oscillatewhichcauses blades A in their holders to be pressed first against one of therevolving disks and then against the other between which they stand.'The pressure of this contact between razor blades and honingand'stropping disks is made yieldingby spring blades24'. Also as bar 27is moved up and down by cams 36 handles 21 are caused to similar'ilymove 'by spring blades '24 thus causing blades A to move up and downwhile in contact with the honing and stroppingdisks. Thus both sides ofrazor blades A are alternately movedu and down over fiat" abrasivesurfaces moving rapidly beneathj j Having thus disclosed my inventionwhat stropping and This permits I claim is new and desire to secure byLetters Patent -is,

in combination, an abrasive-disk shaft mounted for revolution, aplurality of abra v sive disks mounted fixed at spaced distances on saidshaft, a countershaftmountedfor revolution parallel with said diskshaft, power connections between said disk shaft and said countershaft,a cam shaft mounted for revolution parallel with said disk shaft, J

a bar mounted for transverse oscillations and longitudinal reciprocationparallel i'vith said disk shaft, controllable frictional powerconnections betweenv said countershaft and said cam shaft, one of a pairof cam disks mounted fixed on each endof said-cam shaft, connectionsbetween each 01' sald cam dlsks and said barwhereby said bar is causedto oscillate as said cam disks are revolved, a:

cam wheel mounted fixed on said camshaft. power connections between saldcamwheel and said barlwherebysaid bar is'caused to reciprocate as saidcam wheel revolves,

a plurality of blade holders each mountable for oscillation with aholder handle about an 7 held in said holder to first bear against oneof said facing abrasive disks and their against the other facing diskand said re ciprocation of said :holder will cause said blade to movelongitudinally while bearing on sand disks, resilient power connectionsbetween said movablebar and said handle whereby said handle is caused tooscillate on its axis when said'bar reeiproc'ates longitudinally andpower meansto revolve said abrasive disk shaft.

DAVID B. BRowN.

